How do we use execute linux commands as a bunch with shell script. I created following script to to set lan card setting but when i run it give error saying :
[root@mon shll]# ./net
./net: line 1: $: command not found
./net: line 2: $: command not found
./net: line 3: $: command not found
./net: line 4: $: command not found
./net: line 5: $: command not found
./net: line 6: $: command not found

It looks like you are including the prompt character in your commands. The prompt character is the dollar sign ($), which is being read as the command to execute by the shell. Get rid of it on all of the lines of your shell script.